Combined jack and clamp



J. JOHNSEN.

COMBINED JACK AND CLAMP.

APPLICATION FILED JUNE 25, 1920.

Patented. Apr. 26,1921.

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JOHN JOHNSEN, or NEW izarerrrou, new YORK.

COMBINED JACK AND CLAMP."

Specification of Letters P atent.

Patented Apr. as, 1921.

Application filed June 25, I920. Serial No. 391,700.

T 0 all whom it may concern Be it known that I, JOHN JoHNsEN, a citizen of the United States, and resident of New Brighton, in the county of Richmond and State of New York, have invented certain new and useful Improvements in Combined Jacks and Clamps, of which the following is a specification.

This invention relates to improvements in combined jacks and clamps. The object of the invention is to provide a generally improved jack and clamp with particular reference to ease of operation, strength of construction, and facility in interchanging parts for economy in the line of repairs.

Accordingly my invention is embodied in a combined jack and clamp constructed and arranged as hereinafter set forth and as illustrated in the accompanying drawing in which,

Figure 1 is a vertical central sectional view of a jack and clamp embodying my invention, and

Fig. 2 is a detail view taken on the line 22 of Fig. 1.

The reference numeral 3 denotes a base, preferably slightly tapered as shown, and providing a substantial solid foot portion 4 adapted to rest upon the ground or the member which supports the jack during the lifting operation. The base is provided with a socket 5, and at right angles to the said socket the base is apertured to receive a screw, bolt, or pin 6 by means of which a. hook member or jaw 7 is removably held in said socket.

The jaw 7 has a body portion 8 adapted to fit in said socket and a hook portion 9 turned upwardly or away from the foot portion 4. of the base. The latter is further provided with a smooth bore 30. The numeral 10 designates an interiorly threaded nut which is secured to the base by any suitable means, such for instance as the screws 11.

The numeral 12 denotes in general the lifting member which comprises a screwthreaded stem 13 adapted to be screwed into and out of the nut 10 and which stem slides easily within the smooth bore 30. The member 12 is provided with two integral collars 14 and 15, and the top of the stem is formed with an annular groove 16 above the collar 15. Upon the latter rests a lifting head 17 having a suitable gripping surface 18. The head 17 is securely but rotatably held upon the member 12 by a pin or screw 19-w-hichis removably secured to'the head and which extends into the said annular groove 16.

The collar 15 is apertured as at 20 and 21 for the suitable application of a handle 22.

The numeral 23 denotes an upper hook member Or jaw which consists of a jaw 24 having a hook portion 25 similar to the hook portion 9 of the jaw 7, and a clamp portion 26 adapted to fit around the member 12 between the collars l4: and 15. The upper hook member 23 is rotatably and removably held on the stem by means of a clamp member 27 which is secured to the hook member 23 by bolts 28. The two members 26 and27 form a sleeve 0r hinge portion 29, as shown in Fig. 2, and whereby the upper hook is held securely on the stem yet is freely rotatable thereon.

The use of the apparatus is obvious. It may be used as an ordinary lifting jack by applying the handle 22 to screw the stem out of the nut 10. The fact that the head 17' does not turn with the stem is an obvious advantage. The hook member 23 may be turned upward to assist in lifting an object having a contour or which is so constructed that the hook and the head may both be used to advantage.

The apparatus may be used as a clamp by placing the objects to be clamped together between the two hooks 9 and 25. Again, the apparatus may be used to pull together the ends of a cableor rope attached to the hooks after having been passed around the objects to be bound or bundled together.

The advantages of the detailed construction are several. It will be noted that the hooks may be removed and replaced very easily in case one or both should break, for instance, or for other reasons.

Thev upper hook may be turned around the stem to suit the form of an object to be clamped between the hooks, or the upper hook may be turned upward if so desired.

The head is easily removed from the stem, and should the nut 10 or the screw break, either part is easily removed and replaced without it being necessary to discard the entire apparatus.

It is understood that I do not intend to limit my invention to the exact disclosure herein, but that its scope is defined in the appended claim.

I claim:

A combined ack and clamp comprising a base, a hook member secured to said base hook member being rotatably carriedby said to project therefrom in a fixed direction lifting member and being adapted to be with respect thereto, a nut secured to said mounted with its hook portion pointing base, a lifting member in threaded engageeither upward or downward, and means for 5 ment with the said nut, a lifting head rotaoperating said lifting member. 15

tably carried by said lifting member, a plu- Signed at New York in the county of rality of integral collars on the lifting mem- New York and State of New York this 24th her, a second hook member, means for seday of June A, D. 1920.

curing the latter to the said lifting member 10 between the said collars thereon, said second v JOHN J OHNSEN. 

